Home / 70,186.50-105,249.78-40,624.74

Finding the Fourth Proportional to 70,186.50, 105,249.78 and 40,624.74

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Solution

The fourth proportional to 70,186.50, 105,249.78 and 40,624.74 is: 60,919.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,186.50 : 105,249.78 = 40,624.74 : x
  2. Step 2: Convert to fraction form
    70,186.50/105,249.78 = 40,624.74/x
  3. Step 3: Cross multiply
    70,186.50x = 105,249.78 × 40,624.74
  4. Step 4: Simplify right side
    70,186.50x = 4,275,744,947.56
  5. Step 5: Solve for x
    x = 4,275,744,947.56/70,186.50
  6. Step 6: Final answer
    x = 60,919.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.